Description
The Mishimoto MMHOSE-GM-12L is a purpose-built silicone lower radiator hose engineered to replace the aging, degradation-prone rubber hose on classic GM C/K Trucks. Built from five layers of silicone with heat-resistant embedded fibers, it delivers a level of heat and pressure tolerance that rubber simply can’t match after decades of service. This Classic Line hose ships in black and includes two worm-gear clamps so installation is straightforward.
As part of Mishimoto’s Cooling lineup, this silicone lower radiator hose is designed to keep your C/K Truck’s cooling system reliable whether it’s a weekend cruiser or a regular show entry. The multi-layer silicone construction resists the cracking, swelling, and heat degradation that eventually sideline factory rubber hoses, giving your cooling system a durable, performance-grade upgrade. Every Mishimoto silicone hose in this Classic Line series is backed by the Mishimoto Lifetime Warranty, so you can install it with confidence and keep driving your classic truck for years to come.
Vehicle Applications
This is a specific-fit silicone lower radiator hose covering Chevrolet and GMC C/K and K-series trucks from the 1975 through 1986 model years. On the Chevrolet side, it fits the C10 (Big Ten, Cheyenne, Custom, Custom Deluxe, Deluxe, Scottsdale, Silverado), C15 (Cheyenne, Custom, Sport), C20 (Base, Cheyenne, Custom, Custom Deluxe, Deluxe, Scottsdale, Silverado), C30 (Base, Cheyenne, Custom, Custom Deluxe, Deluxe, Scottsdale, Silverado), K10 (Cheyenne, Custom, Custom Deluxe, Deluxe, Scottsdale, Silverado), K20 (Cheyenne, Custom, Custom Deluxe, Deluxe, Scottsdale, Silverado), and K30 (Cheyenne, Custom, Custom Deluxe, Deluxe, Scottsdale, Silverado) across their listed year ranges. On the GMC side, it fits the C15, C1500, C25, C2500, C35, C3500, K15, K1500, K25, K2500, K35, and K3500 in their respective Base, Heavy Half, High Sierra, Indy Hauler, Sierra Classic, Sierra Grande, and Street Coupe trims. Mishimoto also notes this hose as a direct fit for the 1978-1986 GMC C/K Truck equipped with a 305 5.0L or 350 5.7L engine.
Features
- Direct fit for the 1978-1986 GMC C/K Truck with a 305 5.0L or 350 5.7L
- Constructed from five layers of silicone with heat-resistant embedded fibers
- Improves heat and pressure tolerance over the factory rubber hose
- Includes high-quality worm-gear clamps for ease of installation
- Available in black
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Brand: Mishimoto
- Part Number: MMHOSE-GM-12L
- Product Type: Cooling
- Hose Material: Silicone
- Grade Type: Performance
- Hose Color: Black
- Universal or Specific Fit: Specific
- Clamps Included: Yes
- Maximum Temperature Rating: 330°F
- Purchase Includes: (1) Silicone Hose, (2) Worm-Gear Clamps, Mishimoto Lifetime Warranty
- Recommended Clamp Torque: 22 in-lbs (2.5NM); operating range 18-27 in-lbs (2-3NM); do not exceed 27 in-lbs (3NM)
Frequently Asked Questions
What is included with the Mishimoto MMHOSE-GM-12L hose kit?
The kit includes one silicone lower radiator hose and two worm-gear clamps, backed by the Mishimoto Lifetime Warranty.
What material is the Mishimoto lower radiator hose made from?
It is constructed from five layers of silicone with heat-resistant embedded fibers.
What is the maximum temperature rating of this hose?
The hose has a maximum temperature rating of 330°F.
What color is this radiator hose available in?
It is available in black.
What torque should I use when installing the worm-gear clamps?
Mishimoto recommends 22 in-lbs (2.5NM) for the worm-gear clamps, which have an operating range of 18-27 in-lbs (2-3NM); do not exceed the maximum torque rating of 27 in-lbs (3NM).
Which vehicles does this silicone lower radiator hose fit?
It is a specific fit for Chevrolet and GMC C/K and K-series trucks from 1975-1986, including C10, C15, C20, C25/C2500, C30, C35/C3500, K10, K15, K1500, K20, K25/K2500, K30, and K35/K3500 across their listed trims, and is noted as a direct fit for the 1978-1986 GMC C/K Truck with a 305 5.0L or 350 5.7L engine.
âš WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
